Door-knob.



J. T. HENDERSON.

DOOR KNOB.

APPLIOATION FILED APB-13.1907- PATENTED AUG. 13, 1907.

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JOSEPH T. HENDERSON, OF NIAGARA FALLS, ONTARIO, CANADA.

DOOR-KNOB.

Specif cation of Letters Patent.

Patented Aug. 13, 1907.

Application filed April 13, 1907. Serial No. 368,062.

To all whom it may concern:

Be it known that I, JOSEPH T. HENDERSON, a citizen of Canada, residing at Niagara Falls, Ontario, Canada, have invented new and useful Improvements in Door- Knobs, of which the following is a specification.

My invention pertains to door knobs such as are adapted to be adjusted and adjustably fixed with a view of snugly fitting doors of various thicknesses; and it contemplates the combination of a spindle, a'knob movable rectilinearly but held against turning on the spindle, a tubular nut or follower for adjusting the knob and holding the same against outward movement on the spindle, and simple and efficient means on the nut or follower cooperating with complementary means on the knob for precluding casual loosening of the nut or follower under the frequent working of the knob and the loosening of the device as a whole which would necessarily follow loosening of the nut or follower.

With the foregoing in mind the invention will be fully understood from the following description and.

claims when the same are read in connection with the accompanying drawings, forming part of this specification, in which:

Figure l is a view showing my novel knob construction partly in elevation and partly in section as properly arranged relative to a door, which latter is in section. Fig. 2 is an enlarged, detail elevation of the outer end of the knob comprised in my improvements. Fig. 3 is an enlarged detail section taken circumferentially through the wall of the circular countersunk opening in the outer end of the knob. Fig. {i is an enlarged transverse section taken through the tubular nut or follower of my improvements in a plane at the inner side of the head thereof, and looking toward the said head to show the teats or protuberances on the inner side of the head. Fig. 5 comprises disconnected perspective views of the spindle and tubular nut or follower.

Similar letters designate corresponding parts in all of the views of the drawings, referring to which:

A is a door which carries my improved construction and relative to which the said construction is arranged as shown in Fig. 1.

M is a spindle comprised in my improvements and having a portion a, of angular form in cross-section, and also having a threaded end portion b of circular form in cross-section. On the right hand end of the spindle M shown in Fig. 1, a knob B is secured in accordance with my invention or in any other approved manner consonant with the purpose of the said invention.

O is a knob complementary to the threaded end I) of the spindle M, and formed by preference of thin metal, as shown in Fig. 1, and consequently being possessed of a slight amount of resiliency. The said knob O is provided with the usual inner extension 0 having a longitudinal opening d, of angular form in cross-section, designed to snugly receive and slide on the angular portion a of the spindle M; and it is also provided in its outer end wall 0 at the center thereof with a circular countersunk opening f, the wall of which is formed by an inturned flange g on the end wall 6, as clearly shown in Fig. 1. By reference to the drawings and particularly Figs. 2 and 3, it will be observed that the said inturned flange g is provided on its inner side with a circumferential or circular series of corrugations N designed to serve an important purpose hereinafter set forth in detail.

D is the tubular nut or follower of my novel knob and spindle construction. The said nut or follower is provided with a threaded bore h of a diameter to receive and engage the threaded end I) of the spindle M;

and it is also provided with a circular, beveled head I;

which is of a diameter to fully occupy the countersunk opening f in the knob O, and is preferably, though not necessarily, provided with an outer side Z rounded in conformity to the exterior of the knob, and a kerf in formed in said side I and designed for the engagement of the screw driver used in positioning the nut or follower on the spindle. On the head k of the tubularnut or follower, which head is preferably though not necessarily beveled as before stated, is provided with one or more, preferably two teats or radial protuberances P. When two of the said teats or protuberances are employed they are preferably arranged diametrically opposite each other as illustrated, and are designed to cooperate with the corrugations N in serving the important purpose hereinafter set forth.

It will be gathered from the foregoing that when the knob O is moved rectilinearly on the spindle M to its proper position relative to the door A, and the tubular nut 0r follower D is turned to the position shown in Fig. 1 relative to the spindle and the knob C, the knob will be snugly retained in its proper position relative to the door, and it will also be gathered that this is true irrespective of the thickness of the door. In other words by virtue of the construction described the knob O may be properly fitted with facility to doors of various thicknesses.

Incident to the final turn of the tubular nut or follower D through a part of a revolution, it will be seen that the radial teats or projections on the head of the said tubular nut or follower will be brought into engagement with the corrugations N on the flange g, and said teats or projections will be caused to ride over two of the corrugations and assume positions in the depressions between said corrugations and other corrugations of the series. During this engagement of the teats or projections P with the corrugations N the flange y will spring outward and inward so that the final partial turn of the nut or tubular follower D may be effected without undue effort, and yet by reason of said engagement it will be see that the tubular nut or follower D is locked to the spindle M through the knob C, and

consequently there is no liability of the tubular nut or follower being loosened by the frequent working of the knob and permitting the knob and spindle construction as a whole to become loose relative to the door. While there is no liability of the tubular nut or follower D being casually released from the knob C during the manipulation of the knob, yet it will be apparent that when it is desired for any reason to remove the tubular nut or follower, said nut or follower may be disengaged from the knob O by turning the nut 01' follower toward the left with suflicient power to cause the teats or protuberances P to ride over the corrugations N.

Notwithstanding the fact that the cooperating teats or protuberances P and corrugations N absolutely prevent casual loosening of the tubular nut or follower and consequently of the knob O and spindle M, it will be noted that the said teats or protuberances and corrugations do not appreciably add to the cost of production of the knob and spindle construction.

Having described my invention, what I claim and desire to secure by Letters-Patent, is:

l. The combination of a spindle having an intermediate portion of angular form in cross-section and also having an exteriorly threaded end portion, a hollow, metallic knob having an extension at its inner end provided with an angular opening receiving the angular intermediate portion 01' the spindle and also having a circular countersunk opening in the center of its outer end wall and an inturned Ilange forming the wall of the said opening and provided on its inner side with a circular series of corrugations, and a tubular nut or follower having a threaded bore receiving the threaded end of the spindle and also having a circular head arranged to be turned in the opening of the knob and provided with one or more radial teats or protuberances positioned to engage the corrugations on the flange forming the wall of said opening.

2. The combination of a'spindle having an intermediate portion of angular form in cross-section and also having a threaded end portion, a hollow, metallic knob having an extension at its inner end provided with an angular opening receiving the angular intermediate portion of the spindle and also having a circular inwardly-tapered coun tersunk opening in the center of its outer end wall and an inturned flange forming the wall of said opening and provided on its inner side with a circular series of corrugations. and a tubular nut or follower having a threaded bore receiving the threaded end of the spindle and also having a circular beveled head at its outer end disposed and adapted to turn in the countersunk opening of the knob and provided with radial teats or protuberances for engaging the corrugations on the flange and also provided with an outer side curved in conformity to and arranged flush with the exterior of the knob and keried for the engagement of a screw driver.

3. The combination of a knob spindle having an intermediate portion of angular form in cross-section and also having a threaded end portion, a knob having an angularopening receiving the angular intermediate portion of the spindle and also having a circular opening on the wall of which is a circular series of corrugations, and a tubular nut or follower arranged in the circular opening of the knob and having a threaded bore receiving the threaded end of the spindle and also having one or more teats 0r protuberances engaging the said corrugations In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOSEPH 'l. HENDERSON.

Witnesses Jno. R. ANDERSON, Crras. HOSHAL. 

